تقنيات CSS الحديثة للمطورين 🎨

:root {
    --primary: #0071e3;
    --spacing: 16px;
}

.btn {
    background: var(--primary);
    padding: var(--spacing);
}

.container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.responsive {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.navbar {
    display: flex;
    justify-content: space-between;
}

.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
}